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Commit | Line | Data |
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305b0eb2 AL |
1 | /* |
2 | * inet and unix socket functions for qemu | |
3 | * | |
4 | * (c) 2008 Gerd Hoffmann <kraxel@redhat.com> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; under version 2 of the License. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
e6d91ab6 PB |
14 | * |
15 | * Contributions after 2012-01-13 are licensed under the terms of the | |
16 | * GNU GPL, version 2 or (at your option) any later version. | |
305b0eb2 | 17 | */ |
aafd7584 | 18 | #include "qemu/osdep.h" |
d247d25f | 19 | |
6a02c806 SH |
20 | #ifdef CONFIG_AF_VSOCK |
21 | #include <linux/vm_sockets.h> | |
22 | #endif /* CONFIG_AF_VSOCK */ | |
23 | ||
a8d25326 | 24 | #include "qemu-common.h" |
83c9089e | 25 | #include "monitor/monitor.h" |
bd269ebc | 26 | #include "qapi/clone-visitor.h" |
da34e65c | 27 | #include "qapi/error.h" |
9af23989 | 28 | #include "qapi/qapi-visit-sockets.h" |
1de7afc9 | 29 | #include "qemu/sockets.h" |
1de7afc9 | 30 | #include "qemu/main-loop.h" |
b3db211f DB |
31 | #include "qapi/qobject-input-visitor.h" |
32 | #include "qapi/qobject-output-visitor.h" | |
f348b6d1 | 33 | #include "qemu/cutils.h" |
e5b6353c | 34 | #include "trace.h" |
d247d25f AL |
35 | |
36 | #ifndef AI_ADDRCONFIG | |
37 | # define AI_ADDRCONFIG 0 | |
38 | #endif | |
340849a9 | 39 | |
3de3d698 WB |
40 | #ifndef AI_V4MAPPED |
41 | # define AI_V4MAPPED 0 | |
42 | #endif | |
d247d25f | 43 | |
6979a813 DB |
44 | #ifndef AI_NUMERICSERV |
45 | # define AI_NUMERICSERV 0 | |
46 | #endif | |
47 | ||
2af2bf67 | 48 | |
d247d25f AL |
49 | static int inet_getport(struct addrinfo *e) |
50 | { | |
51 | struct sockaddr_in *i4; | |
52 | struct sockaddr_in6 *i6; | |
53 | ||
54 | switch (e->ai_family) { | |
55 | case PF_INET6: | |
56 | i6 = (void*)e->ai_addr; | |
57 | return ntohs(i6->sin6_port); | |
58 | case PF_INET: | |
59 | i4 = (void*)e->ai_addr; | |
60 | return ntohs(i4->sin_port); | |
61 | default: | |
62 | return 0; | |
63 | } | |
64 | } | |
65 | ||
66 | static void inet_setport(struct addrinfo *e, int port) | |
67 | { | |
68 | struct sockaddr_in *i4; | |
69 | struct sockaddr_in6 *i6; | |
70 | ||
71 | switch (e->ai_family) { | |
72 | case PF_INET6: | |
73 | i6 = (void*)e->ai_addr; | |
74 | i6->sin6_port = htons(port); | |
75 | break; | |
76 | case PF_INET: | |
77 | i4 = (void*)e->ai_addr; | |
78 | i4->sin_port = htons(port); | |
79 | break; | |
80 | } | |
81 | } | |
82 | ||
a589569f WX |
83 | NetworkAddressFamily inet_netfamily(int family) |
84 | { | |
85 | switch (family) { | |
86 | case PF_INET6: return NETWORK_ADDRESS_FAMILY_IPV6; | |
87 | case PF_INET: return NETWORK_ADDRESS_FAMILY_IPV4; | |
88 | case PF_UNIX: return NETWORK_ADDRESS_FAMILY_UNIX; | |
6a02c806 SH |
89 | #ifdef CONFIG_AF_VSOCK |
90 | case PF_VSOCK: return NETWORK_ADDRESS_FAMILY_VSOCK; | |
91 | #endif /* CONFIG_AF_VSOCK */ | |
a589569f WX |
92 | } |
93 | return NETWORK_ADDRESS_FAMILY_UNKNOWN; | |
94 | } | |
95 | ||
58dc31f1 DB |
96 | bool fd_is_socket(int fd) |
97 | { | |
98 | int optval; | |
99 | socklen_t optlen = sizeof(optval); | |
100 | return !qemu_getsockopt(fd, SOL_SOCKET, SO_TYPE, &optval, &optlen); | |
101 | } | |
102 | ||
103 | ||
1856835d DB |
104 | /* |
105 | * Matrix we're trying to apply | |
106 | * | |
107 | * ipv4 ipv6 family | |
108 | * - - PF_UNSPEC | |
109 | * - f PF_INET | |
110 | * - t PF_INET6 | |
111 | * f - PF_INET6 | |
112 | * f f <error> | |
113 | * f t PF_INET6 | |
114 | * t - PF_INET | |
115 | * t f PF_INET | |
94bc0d19 | 116 | * t t PF_INET6/PF_UNSPEC |
1856835d | 117 | * |
d43eda3d | 118 | * NB, this matrix is only about getting the necessary results |
1856835d DB |
119 | * from getaddrinfo(). Some of the cases require further work |
120 | * after reading results from getaddrinfo in order to fully | |
94bc0d19 DB |
121 | * apply the logic the end user wants. |
122 | * | |
123 | * In the first and last cases, we must set IPV6_V6ONLY=0 | |
124 | * when binding, to allow a single listener to potentially | |
125 | * accept both IPv4+6 addresses. | |
1856835d | 126 | */ |
c1b412f1 DB |
127 | int inet_ai_family_from_address(InetSocketAddress *addr, |
128 | Error **errp) | |
1856835d DB |
129 | { |
130 | if (addr->has_ipv6 && addr->has_ipv4 && | |
131 | !addr->ipv6 && !addr->ipv4) { | |
132 | error_setg(errp, "Cannot disable IPv4 and IPv6 at same time"); | |
133 | return PF_UNSPEC; | |
134 | } | |
94bc0d19 DB |
135 | if ((addr->has_ipv6 && addr->ipv6) && (addr->has_ipv4 && addr->ipv4)) { |
136 | /* | |
137 | * Some backends can only do a single listener. In that case | |
138 | * we want empty hostname to resolve to "::" and then use the | |
139 | * flag IPV6_V6ONLY==0 to get both protocols on 1 socket. This | |
140 | * doesn't work for addresses other than "", so they're just | |
141 | * inevitably broken until multiple listeners can be used, | |
142 | * and thus we honour getaddrinfo automatic protocol detection | |
143 | * Once all backends do multi-listener, remove the PF_INET6 | |
144 | * branch entirely. | |
145 | */ | |
146 | if (!addr->host || g_str_equal(addr->host, "")) { | |
147 | return PF_INET6; | |
148 | } else { | |
149 | return PF_UNSPEC; | |
150 | } | |
151 | } | |
1856835d DB |
152 | if ((addr->has_ipv6 && addr->ipv6) || (addr->has_ipv4 && !addr->ipv4)) { |
153 | return PF_INET6; | |
154 | } | |
155 | if ((addr->has_ipv4 && addr->ipv4) || (addr->has_ipv6 && !addr->ipv6)) { | |
156 | return PF_INET; | |
157 | } | |
158 | return PF_UNSPEC; | |
159 | } | |
160 | ||
39f80521 KO |
161 | static int create_fast_reuse_socket(struct addrinfo *e) |
162 | { | |
163 | int slisten = qemu_socket(e->ai_family, e->ai_socktype, e->ai_protocol); | |
164 | if (slisten < 0) { | |
165 | return -1; | |
166 | } | |
167 | socket_set_fast_reuse(slisten); | |
168 | return slisten; | |
169 | } | |
170 | ||
89382c3d KO |
171 | static int try_bind(int socket, InetSocketAddress *saddr, struct addrinfo *e) |
172 | { | |
173 | #ifndef IPV6_V6ONLY | |
174 | return bind(socket, e->ai_addr, e->ai_addrlen); | |
175 | #else | |
176 | /* | |
177 | * Deals with first & last cases in matrix in comment | |
178 | * for inet_ai_family_from_address(). | |
179 | */ | |
180 | int v6only = | |
181 | ((!saddr->has_ipv4 && !saddr->has_ipv6) || | |
182 | (saddr->has_ipv4 && saddr->ipv4 && | |
183 | saddr->has_ipv6 && saddr->ipv6)) ? 0 : 1; | |
184 | int stat; | |
185 | ||
186 | rebind: | |
187 | if (e->ai_family == PF_INET6) { | |
188 | qemu_setsockopt(socket, IPPROTO_IPV6, IPV6_V6ONLY, &v6only, | |
189 | sizeof(v6only)); | |
190 | } | |
191 | ||
192 | stat = bind(socket, e->ai_addr, e->ai_addrlen); | |
193 | if (!stat) { | |
194 | return 0; | |
195 | } | |
196 | ||
197 | /* If we got EADDRINUSE from an IPv6 bind & v6only is unset, | |
198 | * it could be that the IPv4 port is already claimed, so retry | |
199 | * with v6only set | |
200 | */ | |
201 | if (e->ai_family == PF_INET6 && errno == EADDRINUSE && !v6only) { | |
202 | v6only = 1; | |
203 | goto rebind; | |
204 | } | |
205 | return stat; | |
206 | #endif | |
207 | } | |
208 | ||
1856835d DB |
209 | static int inet_listen_saddr(InetSocketAddress *saddr, |
210 | int port_offset, | |
e5b6353c | 211 | int num, |
1856835d | 212 | Error **errp) |
d247d25f AL |
213 | { |
214 | struct addrinfo ai,*res,*e; | |
d247d25f AL |
215 | char port[33]; |
216 | char uaddr[INET6_ADDRSTRLEN+1]; | |
217 | char uport[33]; | |
9cf961bb | 218 | int rc, port_min, port_max, p; |
10a7b7e6 | 219 | int slisten = -1; |
9cf961bb KO |
220 | int saved_errno = 0; |
221 | bool socket_created = false; | |
1856835d | 222 | Error *err = NULL; |
d247d25f | 223 | |
aec21d31 VSO |
224 | if (saddr->keep_alive) { |
225 | error_setg(errp, "keep-alive option is not supported for passive " | |
226 | "sockets"); | |
227 | return -1; | |
228 | } | |
229 | ||
d247d25f | 230 | memset(&ai,0, sizeof(ai)); |
3de3d698 | 231 | ai.ai_flags = AI_PASSIVE; |
6979a813 DB |
232 | if (saddr->has_numeric && saddr->numeric) { |
233 | ai.ai_flags |= AI_NUMERICHOST | AI_NUMERICSERV; | |
234 | } | |
1856835d | 235 | ai.ai_family = inet_ai_family_from_address(saddr, &err); |
e5bc776f | 236 | ai.ai_socktype = SOCK_STREAM; |
d247d25f | 237 | |
1856835d DB |
238 | if (err) { |
239 | error_propagate(errp, err); | |
240 | return -1; | |
241 | } | |
242 | ||
243 | if (saddr->host == NULL) { | |
0983f5e6 | 244 | error_setg(errp, "host not specified"); |
e5bc776f | 245 | return -1; |
d247d25f | 246 | } |
1856835d DB |
247 | if (saddr->port != NULL) { |
248 | pstrcpy(port, sizeof(port), saddr->port); | |
0983f5e6 DB |
249 | } else { |
250 | port[0] = '\0'; | |
251 | } | |
d247d25f AL |
252 | |
253 | /* lookup */ | |
8bc89127 GH |
254 | if (port_offset) { |
255 | unsigned long long baseport; | |
0983f5e6 DB |
256 | if (strlen(port) == 0) { |
257 | error_setg(errp, "port not specified"); | |
258 | return -1; | |
259 | } | |
8bc89127 GH |
260 | if (parse_uint_full(port, &baseport, 10) < 0) { |
261 | error_setg(errp, "can't convert to a number: %s", port); | |
262 | return -1; | |
263 | } | |
264 | if (baseport > 65535 || | |
265 | baseport + port_offset > 65535) { | |
266 | error_setg(errp, "port %s out of range", port); | |
267 | return -1; | |
268 | } | |
269 | snprintf(port, sizeof(port), "%d", (int)baseport + port_offset); | |
270 | } | |
1856835d | 271 | rc = getaddrinfo(strlen(saddr->host) ? saddr->host : NULL, |
0983f5e6 | 272 | strlen(port) ? port : NULL, &ai, &res); |
d247d25f | 273 | if (rc != 0) { |
1856835d DB |
274 | error_setg(errp, "address resolution failed for %s:%s: %s", |
275 | saddr->host, port, gai_strerror(rc)); | |
d247d25f AL |
276 | return -1; |
277 | } | |
d247d25f | 278 | |
9cf961bb | 279 | /* create socket + bind/listen */ |
d247d25f | 280 | for (e = res; e != NULL; e = e->ai_next) { |
39b6efc8 | 281 | getnameinfo((struct sockaddr*)e->ai_addr,e->ai_addrlen, |
7d37435b PB |
282 | uaddr,INET6_ADDRSTRLEN,uport,32, |
283 | NI_NUMERICHOST | NI_NUMERICSERV); | |
39f80521 | 284 | |
877691f9 | 285 | port_min = inet_getport(e); |
1856835d | 286 | port_max = saddr->has_to ? saddr->to + port_offset : port_min; |
877691f9 MA |
287 | for (p = port_min; p <= port_max; p++) { |
288 | inet_setport(e, p); | |
10a7b7e6 DB |
289 | |
290 | slisten = create_fast_reuse_socket(e); | |
291 | if (slisten < 0) { | |
292 | /* First time we expect we might fail to create the socket | |
293 | * eg if 'e' has AF_INET6 but ipv6 kmod is not loaded. | |
294 | * Later iterations should always succeed if first iteration | |
295 | * worked though, so treat that as fatal. | |
296 | */ | |
297 | if (p == port_min) { | |
9cf961bb KO |
298 | continue; |
299 | } else { | |
10a7b7e6 DB |
300 | error_setg_errno(errp, errno, |
301 | "Failed to recreate failed listening socket"); | |
9cf961bb | 302 | goto listen_failed; |
029409e5 | 303 | } |
d247d25f | 304 | } |
10a7b7e6 DB |
305 | socket_created = true; |
306 | ||
307 | rc = try_bind(slisten, saddr, e); | |
308 | if (rc < 0) { | |
309 | if (errno != EADDRINUSE) { | |
310 | error_setg_errno(errp, errno, "Failed to bind socket"); | |
311 | goto listen_failed; | |
312 | } | |
313 | } else { | |
e5b6353c | 314 | if (!listen(slisten, num)) { |
10a7b7e6 DB |
315 | goto listen_ok; |
316 | } | |
317 | if (errno != EADDRINUSE) { | |
318 | error_setg_errno(errp, errno, "Failed to listen on socket"); | |
319 | goto listen_failed; | |
320 | } | |
9cf961bb KO |
321 | } |
322 | /* Someone else managed to bind to the same port and beat us | |
323 | * to listen on it! Socket semantics does not allow us to | |
324 | * recover from this situation, so we need to recreate the | |
325 | * socket to allow bind attempts for subsequent ports: | |
326 | */ | |
327 | closesocket(slisten); | |
10a7b7e6 | 328 | slisten = -1; |
d247d25f | 329 | } |
9cf961bb KO |
330 | } |
331 | error_setg_errno(errp, errno, | |
332 | socket_created ? | |
333 | "Failed to find an available port" : | |
334 | "Failed to create a socket"); | |
335 | listen_failed: | |
336 | saved_errno = errno; | |
337 | if (slisten >= 0) { | |
d247d25f AL |
338 | closesocket(slisten); |
339 | } | |
d247d25f | 340 | freeaddrinfo(res); |
9cf961bb | 341 | errno = saved_errno; |
d247d25f AL |
342 | return -1; |
343 | ||
9cf961bb | 344 | listen_ok: |
d247d25f AL |
345 | freeaddrinfo(res); |
346 | return slisten; | |
347 | } | |
348 | ||
05bc1d8a MT |
349 | #ifdef _WIN32 |
350 | #define QEMU_SOCKET_RC_INPROGRESS(rc) \ | |
351 | ((rc) == -EINPROGRESS || (rc) == -EWOULDBLOCK || (rc) == -WSAEALREADY) | |
352 | #else | |
353 | #define QEMU_SOCKET_RC_INPROGRESS(rc) \ | |
354 | ((rc) == -EINPROGRESS) | |
355 | #endif | |
356 | ||
dfc00eb7 DB |
357 | static int inet_connect_addr(const InetSocketAddress *saddr, |
358 | struct addrinfo *addr, Error **errp) | |
233aa5c2 OW |
359 | { |
360 | int sock, rc; | |
361 | ||
05bc1d8a MT |
362 | sock = qemu_socket(addr->ai_family, addr->ai_socktype, addr->ai_protocol); |
363 | if (sock < 0) { | |
dfc00eb7 DB |
364 | error_setg_errno(errp, errno, "Failed to create socket family %d", |
365 | addr->ai_family); | |
05bc1d8a MT |
366 | return -1; |
367 | } | |
04fd1c78 | 368 | socket_set_fast_reuse(sock); |
b2587932 | 369 | |
05bc1d8a MT |
370 | /* connect to peer */ |
371 | do { | |
372 | rc = 0; | |
373 | if (connect(sock, addr->ai_addr, addr->ai_addrlen) < 0) { | |
b16a44e1 | 374 | rc = -errno; |
05bc1d8a MT |
375 | } |
376 | } while (rc == -EINTR); | |
377 | ||
b2587932 | 378 | if (rc < 0) { |
dfc00eb7 DB |
379 | error_setg_errno(errp, errno, "Failed to connect to '%s:%s'", |
380 | saddr->host, saddr->port); | |
05bc1d8a MT |
381 | closesocket(sock); |
382 | return -1; | |
383 | } | |
b2587932 | 384 | |
05bc1d8a MT |
385 | return sock; |
386 | } | |
387 | ||
2942e420 DB |
388 | static struct addrinfo *inet_parse_connect_saddr(InetSocketAddress *saddr, |
389 | Error **errp) | |
05bc1d8a MT |
390 | { |
391 | struct addrinfo ai, *res; | |
392 | int rc; | |
2942e420 | 393 | Error *err = NULL; |
340849a9 | 394 | static int useV4Mapped = 1; |
d247d25f | 395 | |
05bc1d8a | 396 | memset(&ai, 0, sizeof(ai)); |
233aa5c2 | 397 | |
340849a9 | 398 | ai.ai_flags = AI_CANONNAME | AI_ADDRCONFIG; |
d73415a3 | 399 | if (qatomic_read(&useV4Mapped)) { |
340849a9 DB |
400 | ai.ai_flags |= AI_V4MAPPED; |
401 | } | |
2942e420 | 402 | ai.ai_family = inet_ai_family_from_address(saddr, &err); |
f4c94c7c | 403 | ai.ai_socktype = SOCK_STREAM; |
d247d25f | 404 | |
2942e420 DB |
405 | if (err) { |
406 | error_propagate(errp, err); | |
05bc1d8a | 407 | return NULL; |
d247d25f AL |
408 | } |
409 | ||
2942e420 DB |
410 | if (saddr->host == NULL || saddr->port == NULL) { |
411 | error_setg(errp, "host and/or port not specified"); | |
412 | return NULL; | |
05bc1d8a | 413 | } |
d247d25f AL |
414 | |
415 | /* lookup */ | |
2942e420 | 416 | rc = getaddrinfo(saddr->host, saddr->port, &ai, &res); |
340849a9 DB |
417 | |
418 | /* At least FreeBSD and OS-X 10.6 declare AI_V4MAPPED but | |
419 | * then don't implement it in their getaddrinfo(). Detect | |
8cc360b9 | 420 | * this and retry without the flag since that's preferable |
340849a9 DB |
421 | * to a fatal error |
422 | */ | |
423 | if (rc == EAI_BADFLAGS && | |
424 | (ai.ai_flags & AI_V4MAPPED)) { | |
d73415a3 | 425 | qatomic_set(&useV4Mapped, 0); |
340849a9 DB |
426 | ai.ai_flags &= ~AI_V4MAPPED; |
427 | rc = getaddrinfo(saddr->host, saddr->port, &ai, &res); | |
428 | } | |
05bc1d8a | 429 | if (rc != 0) { |
2942e420 DB |
430 | error_setg(errp, "address resolution failed for %s:%s: %s", |
431 | saddr->host, saddr->port, gai_strerror(rc)); | |
05bc1d8a MT |
432 | return NULL; |
433 | } | |
434 | return res; | |
435 | } | |
436 | ||
5db5f44c OW |
437 | /** |
438 | * Create a socket and connect it to an address. | |
439 | * | |
2942e420 | 440 | * @saddr: Inet socket address specification |
5db5f44c OW |
441 | * @errp: set on error |
442 | * | |
443 | * Returns: -1 on error, file descriptor on success. | |
444 | */ | |
b2587932 | 445 | int inet_connect_saddr(InetSocketAddress *saddr, Error **errp) |
05bc1d8a | 446 | { |
3f9286b7 | 447 | Error *local_err = NULL; |
05bc1d8a MT |
448 | struct addrinfo *res, *e; |
449 | int sock = -1; | |
05bc1d8a | 450 | |
2942e420 | 451 | res = inet_parse_connect_saddr(saddr, errp); |
05bc1d8a MT |
452 | if (!res) { |
453 | return -1; | |
454 | } | |
455 | ||
d247d25f | 456 | for (e = res; e != NULL; e = e->ai_next) { |
3f9286b7 MA |
457 | error_free(local_err); |
458 | local_err = NULL; | |
dfc00eb7 | 459 | sock = inet_connect_addr(saddr, e, &local_err); |
3f9286b7 | 460 | if (sock >= 0) { |
05bc1d8a | 461 | break; |
a6ba35b3 | 462 | } |
d247d25f | 463 | } |
3f9286b7 | 464 | |
da5e1169 VSO |
465 | freeaddrinfo(res); |
466 | ||
3f9286b7 MA |
467 | if (sock < 0) { |
468 | error_propagate(errp, local_err); | |
da5e1169 | 469 | return sock; |
3f9286b7 | 470 | } |
b2587932 | 471 | |
aec21d31 VSO |
472 | if (saddr->keep_alive) { |
473 | int val = 1; | |
474 | int ret = qemu_setsockopt(sock, SOL_SOCKET, SO_KEEPALIVE, | |
475 | &val, sizeof(val)); | |
476 | ||
477 | if (ret < 0) { | |
478 | error_setg_errno(errp, errno, "Unable to set KEEPALIVE"); | |
479 | close(sock); | |
480 | return -1; | |
481 | } | |
482 | } | |
483 | ||
05bc1d8a | 484 | return sock; |
d247d25f AL |
485 | } |
486 | ||
8b39910e DB |
487 | static int inet_dgram_saddr(InetSocketAddress *sraddr, |
488 | InetSocketAddress *sladdr, | |
489 | Error **errp) | |
7e1b35b4 GH |
490 | { |
491 | struct addrinfo ai, *peer = NULL, *local = NULL; | |
492 | const char *addr; | |
493 | const char *port; | |
7e1b35b4 | 494 | int sock = -1, rc; |
8b39910e | 495 | Error *err = NULL; |
7e1b35b4 GH |
496 | |
497 | /* lookup peer addr */ | |
498 | memset(&ai,0, sizeof(ai)); | |
3de3d698 | 499 | ai.ai_flags = AI_CANONNAME | AI_V4MAPPED | AI_ADDRCONFIG; |
8b39910e | 500 | ai.ai_family = inet_ai_family_from_address(sraddr, &err); |
7e1b35b4 GH |
501 | ai.ai_socktype = SOCK_DGRAM; |
502 | ||
8b39910e DB |
503 | if (err) { |
504 | error_propagate(errp, err); | |
58c652c0 | 505 | goto err; |
8b39910e DB |
506 | } |
507 | ||
508 | addr = sraddr->host; | |
509 | port = sraddr->port; | |
7e1b35b4 GH |
510 | if (addr == NULL || strlen(addr) == 0) { |
511 | addr = "localhost"; | |
512 | } | |
513 | if (port == NULL || strlen(port) == 0) { | |
4f085c82 | 514 | error_setg(errp, "remote port not specified"); |
58c652c0 | 515 | goto err; |
7e1b35b4 GH |
516 | } |
517 | ||
9cd1883c | 518 | if ((rc = getaddrinfo(addr, port, &ai, &peer)) != 0) { |
4f085c82 PB |
519 | error_setg(errp, "address resolution failed for %s:%s: %s", addr, port, |
520 | gai_strerror(rc)); | |
26015051 | 521 | goto err; |
7e1b35b4 | 522 | } |
7e1b35b4 GH |
523 | |
524 | /* lookup local addr */ | |
525 | memset(&ai,0, sizeof(ai)); | |
526 | ai.ai_flags = AI_PASSIVE; | |
527 | ai.ai_family = peer->ai_family; | |
528 | ai.ai_socktype = SOCK_DGRAM; | |
529 | ||
8b39910e DB |
530 | if (sladdr) { |
531 | addr = sladdr->host; | |
532 | port = sladdr->port; | |
533 | if (addr == NULL || strlen(addr) == 0) { | |
534 | addr = NULL; | |
535 | } | |
536 | if (!port || strlen(port) == 0) { | |
537 | port = "0"; | |
538 | } | |
539 | } else { | |
7e1b35b4 | 540 | addr = NULL; |
7e1b35b4 | 541 | port = "0"; |
8b39910e | 542 | } |
7e1b35b4 | 543 | |
9cd1883c | 544 | if ((rc = getaddrinfo(addr, port, &ai, &local)) != 0) { |
4f085c82 PB |
545 | error_setg(errp, "address resolution failed for %s:%s: %s", addr, port, |
546 | gai_strerror(rc)); | |
39b38459 | 547 | goto err; |
7e1b35b4 | 548 | } |
7e1b35b4 GH |
549 | |
550 | /* create socket */ | |
40ff6d7e | 551 | sock = qemu_socket(peer->ai_family, peer->ai_socktype, peer->ai_protocol); |
7e1b35b4 | 552 | if (sock < 0) { |
dfc00eb7 DB |
553 | error_setg_errno(errp, errno, "Failed to create socket family %d", |
554 | peer->ai_family); | |
7e1b35b4 GH |
555 | goto err; |
556 | } | |
04fd1c78 | 557 | socket_set_fast_reuse(sock); |
7e1b35b4 GH |
558 | |
559 | /* bind socket */ | |
7e1b35b4 | 560 | if (bind(sock, local->ai_addr, local->ai_addrlen) < 0) { |
235256a2 | 561 | error_setg_errno(errp, errno, "Failed to bind socket"); |
7e1b35b4 GH |
562 | goto err; |
563 | } | |
564 | ||
565 | /* connect to peer */ | |
7e1b35b4 | 566 | if (connect(sock,peer->ai_addr,peer->ai_addrlen) < 0) { |
dfc00eb7 DB |
567 | error_setg_errno(errp, errno, "Failed to connect to '%s:%s'", |
568 | addr, port); | |
7e1b35b4 GH |
569 | goto err; |
570 | } | |
571 | ||
572 | freeaddrinfo(local); | |
573 | freeaddrinfo(peer); | |
574 | return sock; | |
575 | ||
576 | err: | |
26015051 | 577 | if (sock != -1) { |
7e1b35b4 | 578 | closesocket(sock); |
26015051 C |
579 | } |
580 | if (local) { | |
7e1b35b4 | 581 | freeaddrinfo(local); |
26015051 C |
582 | } |
583 | if (peer) { | |
7e1b35b4 | 584 | freeaddrinfo(peer); |
26015051 C |
585 | } |
586 | ||
7e1b35b4 GH |
587 | return -1; |
588 | } | |
589 | ||
f4c94c7c | 590 | /* compatibility wrapper */ |
3e32370a DB |
591 | static int inet_parse_flag(const char *flagname, const char *optstr, bool *val, |
592 | Error **errp) | |
593 | { | |
594 | char *end; | |
595 | size_t len; | |
596 | ||
597 | end = strstr(optstr, ","); | |
598 | if (end) { | |
599 | if (end[1] == ',') { /* Reject 'ipv6=on,,foo' */ | |
600 | error_setg(errp, "error parsing '%s' flag '%s'", flagname, optstr); | |
601 | return -1; | |
602 | } | |
603 | len = end - optstr; | |
604 | } else { | |
605 | len = strlen(optstr); | |
606 | } | |
607 | if (len == 0 || (len == 3 && strncmp(optstr, "=on", len) == 0)) { | |
608 | *val = true; | |
609 | } else if (len == 4 && strncmp(optstr, "=off", len) == 0) { | |
610 | *val = false; | |
611 | } else { | |
612 | error_setg(errp, "error parsing '%s' flag '%s'", flagname, optstr); | |
613 | return -1; | |
614 | } | |
615 | return 0; | |
616 | } | |
617 | ||
0785bd7a | 618 | int inet_parse(InetSocketAddress *addr, const char *str, Error **errp) |
f4c94c7c GH |
619 | { |
620 | const char *optstr, *h; | |
55a10996 | 621 | char host[65]; |
f4c94c7c | 622 | char port[33]; |
879e45c7 | 623 | int to; |
f4c94c7c | 624 | int pos; |
3e32370a | 625 | char *begin; |
f4c94c7c | 626 | |
0785bd7a | 627 | memset(addr, 0, sizeof(*addr)); |
879e45c7 | 628 | |
f4c94c7c GH |
629 | /* parse address */ |
630 | if (str[0] == ':') { | |
631 | /* no host given */ | |
879e45c7 | 632 | host[0] = '\0'; |
9cd1883c | 633 | if (sscanf(str, ":%32[^,]%n", port, &pos) != 1) { |
2f002c43 | 634 | error_setg(errp, "error parsing port in address '%s'", str); |
0785bd7a | 635 | return -1; |
f4c94c7c GH |
636 | } |
637 | } else if (str[0] == '[') { | |
638 | /* IPv6 addr */ | |
9cd1883c | 639 | if (sscanf(str, "[%64[^]]]:%32[^,]%n", host, port, &pos) != 2) { |
2f002c43 | 640 | error_setg(errp, "error parsing IPv6 address '%s'", str); |
0785bd7a | 641 | return -1; |
f4c94c7c | 642 | } |
f4c94c7c | 643 | } else { |
391b7b97 | 644 | /* hostname or IPv4 addr */ |
9cd1883c | 645 | if (sscanf(str, "%64[^:]:%32[^,]%n", host, port, &pos) != 2) { |
2f002c43 | 646 | error_setg(errp, "error parsing address '%s'", str); |
0785bd7a | 647 | return -1; |
f4c94c7c GH |
648 | } |
649 | } | |
879e45c7 PB |
650 | |
651 | addr->host = g_strdup(host); | |
652 | addr->port = g_strdup(port); | |
f4c94c7c GH |
653 | |
654 | /* parse options */ | |
655 | optstr = str + pos; | |
656 | h = strstr(optstr, ",to="); | |
879e45c7 | 657 | if (h) { |
1ccbc285 AP |
658 | h += 4; |
659 | if (sscanf(h, "%d%n", &to, &pos) != 1 || | |
660 | (h[pos] != '\0' && h[pos] != ',')) { | |
879e45c7 | 661 | error_setg(errp, "error parsing to= argument"); |
0785bd7a | 662 | return -1; |
879e45c7 PB |
663 | } |
664 | addr->has_to = true; | |
665 | addr->to = to; | |
666 | } | |
3e32370a DB |
667 | begin = strstr(optstr, ",ipv4"); |
668 | if (begin) { | |
669 | if (inet_parse_flag("ipv4", begin + 5, &addr->ipv4, errp) < 0) { | |
670 | return -1; | |
671 | } | |
672 | addr->has_ipv4 = true; | |
879e45c7 | 673 | } |
3e32370a DB |
674 | begin = strstr(optstr, ",ipv6"); |
675 | if (begin) { | |
676 | if (inet_parse_flag("ipv6", begin + 5, &addr->ipv6, errp) < 0) { | |
677 | return -1; | |
678 | } | |
679 | addr->has_ipv6 = true; | |
879e45c7 | 680 | } |
aec21d31 VSO |
681 | begin = strstr(optstr, ",keep-alive"); |
682 | if (begin) { | |
683 | if (inet_parse_flag("keep-alive", begin + strlen(",keep-alive"), | |
684 | &addr->keep_alive, errp) < 0) | |
685 | { | |
686 | return -1; | |
687 | } | |
688 | addr->has_keep_alive = true; | |
689 | } | |
0785bd7a | 690 | return 0; |
879e45c7 PB |
691 | } |
692 | ||
e5bc776f | 693 | |
5db5f44c OW |
694 | /** |
695 | * Create a blocking socket and connect it to an address. | |
696 | * | |
697 | * @str: address string | |
698 | * @errp: set in case of an error | |
699 | * | |
700 | * Returns -1 in case of error, file descriptor on success | |
701 | **/ | |
702 | int inet_connect(const char *str, Error **errp) | |
f4c94c7c | 703 | { |
f4c94c7c | 704 | int sock = -1; |
0785bd7a | 705 | InetSocketAddress *addr = g_new(InetSocketAddress, 1); |
f4c94c7c | 706 | |
0785bd7a | 707 | if (!inet_parse(addr, str, errp)) { |
b2587932 | 708 | sock = inet_connect_saddr(addr, errp); |
5db5f44c | 709 | } |
0785bd7a | 710 | qapi_free_InetSocketAddress(addr); |
5db5f44c OW |
711 | return sock; |
712 | } | |
713 | ||
6a02c806 SH |
714 | #ifdef CONFIG_AF_VSOCK |
715 | static bool vsock_parse_vaddr_to_sockaddr(const VsockSocketAddress *vaddr, | |
716 | struct sockaddr_vm *svm, | |
717 | Error **errp) | |
718 | { | |
719 | unsigned long long val; | |
720 | ||
721 | memset(svm, 0, sizeof(*svm)); | |
722 | svm->svm_family = AF_VSOCK; | |
723 | ||
724 | if (parse_uint_full(vaddr->cid, &val, 10) < 0 || | |
725 | val > UINT32_MAX) { | |
726 | error_setg(errp, "Failed to parse cid '%s'", vaddr->cid); | |
727 | return false; | |
728 | } | |
729 | svm->svm_cid = val; | |
730 | ||
731 | if (parse_uint_full(vaddr->port, &val, 10) < 0 || | |
732 | val > UINT32_MAX) { | |
733 | error_setg(errp, "Failed to parse port '%s'", vaddr->port); | |
734 | return false; | |
735 | } | |
736 | svm->svm_port = val; | |
737 | ||
738 | return true; | |
739 | } | |
740 | ||
dfc00eb7 DB |
741 | static int vsock_connect_addr(const VsockSocketAddress *vaddr, |
742 | const struct sockaddr_vm *svm, Error **errp) | |
6a02c806 SH |
743 | { |
744 | int sock, rc; | |
745 | ||
6a02c806 SH |
746 | sock = qemu_socket(AF_VSOCK, SOCK_STREAM, 0); |
747 | if (sock < 0) { | |
dfc00eb7 DB |
748 | error_setg_errno(errp, errno, "Failed to create socket family %d", |
749 | AF_VSOCK); | |
6a02c806 SH |
750 | return -1; |
751 | } | |
b2587932 | 752 | |
6a02c806 SH |
753 | /* connect to peer */ |
754 | do { | |
755 | rc = 0; | |
756 | if (connect(sock, (const struct sockaddr *)svm, sizeof(*svm)) < 0) { | |
757 | rc = -errno; | |
758 | } | |
759 | } while (rc == -EINTR); | |
760 | ||
b2587932 | 761 | if (rc < 0) { |
dfc00eb7 DB |
762 | error_setg_errno(errp, errno, "Failed to connect to '%s:%s'", |
763 | vaddr->cid, vaddr->port); | |
6a02c806 SH |
764 | closesocket(sock); |
765 | return -1; | |
766 | } | |
b2587932 | 767 | |
6a02c806 SH |
768 | return sock; |
769 | } | |
770 | ||
b2587932 | 771 | static int vsock_connect_saddr(VsockSocketAddress *vaddr, Error **errp) |
6a02c806 SH |
772 | { |
773 | struct sockaddr_vm svm; | |
6a02c806 SH |
774 | |
775 | if (!vsock_parse_vaddr_to_sockaddr(vaddr, &svm, errp)) { | |
776 | return -1; | |
777 | } | |
778 | ||
dfc00eb7 | 779 | return vsock_connect_addr(vaddr, &svm, errp); |
6a02c806 SH |
780 | } |
781 | ||
782 | static int vsock_listen_saddr(VsockSocketAddress *vaddr, | |
e5b6353c | 783 | int num, |
6a02c806 SH |
784 | Error **errp) |
785 | { | |
786 | struct sockaddr_vm svm; | |
787 | int slisten; | |
788 | ||
789 | if (!vsock_parse_vaddr_to_sockaddr(vaddr, &svm, errp)) { | |
790 | return -1; | |
791 | } | |
792 | ||
793 | slisten = qemu_socket(AF_VSOCK, SOCK_STREAM, 0); | |
794 | if (slisten < 0) { | |
795 | error_setg_errno(errp, errno, "Failed to create socket"); | |
796 | return -1; | |
797 | } | |
798 | ||
799 | if (bind(slisten, (const struct sockaddr *)&svm, sizeof(svm)) != 0) { | |
800 | error_setg_errno(errp, errno, "Failed to bind socket"); | |
801 | closesocket(slisten); | |
802 | return -1; | |
803 | } | |
804 | ||
e5b6353c | 805 | if (listen(slisten, num) != 0) { |
6a02c806 SH |
806 | error_setg_errno(errp, errno, "Failed to listen on socket"); |
807 | closesocket(slisten); | |
808 | return -1; | |
809 | } | |
810 | return slisten; | |
811 | } | |
812 | ||
4db5c619 MA |
813 | static int vsock_parse(VsockSocketAddress *addr, const char *str, |
814 | Error **errp) | |
6a02c806 | 815 | { |
6a02c806 SH |
816 | char cid[33]; |
817 | char port[33]; | |
818 | int n; | |
819 | ||
820 | if (sscanf(str, "%32[^:]:%32[^,]%n", cid, port, &n) != 2) { | |
821 | error_setg(errp, "error parsing address '%s'", str); | |
4db5c619 | 822 | return -1; |
6a02c806 SH |
823 | } |
824 | if (str[n] != '\0') { | |
825 | error_setg(errp, "trailing characters in address '%s'", str); | |
4db5c619 | 826 | return -1; |
6a02c806 SH |
827 | } |
828 | ||
6a02c806 SH |
829 | addr->cid = g_strdup(cid); |
830 | addr->port = g_strdup(port); | |
4db5c619 | 831 | return 0; |
6a02c806 SH |
832 | } |
833 | #else | |
834 | static void vsock_unsupported(Error **errp) | |
835 | { | |
836 | error_setg(errp, "socket family AF_VSOCK unsupported"); | |
837 | } | |
838 | ||
b2587932 | 839 | static int vsock_connect_saddr(VsockSocketAddress *vaddr, Error **errp) |
6a02c806 SH |
840 | { |
841 | vsock_unsupported(errp); | |
842 | return -1; | |
843 | } | |
844 | ||
845 | static int vsock_listen_saddr(VsockSocketAddress *vaddr, | |
e5b6353c | 846 | int num, |
6a02c806 SH |
847 | Error **errp) |
848 | { | |
849 | vsock_unsupported(errp); | |
850 | return -1; | |
851 | } | |
852 | ||
4db5c619 MA |
853 | static int vsock_parse(VsockSocketAddress *addr, const char *str, |
854 | Error **errp) | |
6a02c806 SH |
855 | { |
856 | vsock_unsupported(errp); | |
4db5c619 | 857 | return -1; |
6a02c806 SH |
858 | } |
859 | #endif /* CONFIG_AF_VSOCK */ | |
860 | ||
d247d25f AL |
861 | #ifndef _WIN32 |
862 | ||
8acefc79 MA |
863 | static bool saddr_is_abstract(UnixSocketAddress *saddr) |
864 | { | |
865 | #ifdef CONFIG_LINUX | |
866 | return saddr->abstract; | |
867 | #else | |
868 | return false; | |
869 | #endif | |
870 | } | |
871 | ||
872 | static bool saddr_is_tight(UnixSocketAddress *saddr) | |
873 | { | |
874 | #ifdef CONFIG_LINUX | |
875 | return !saddr->has_tight || saddr->tight; | |
876 | #else | |
877 | return false; | |
878 | #endif | |
879 | } | |
880 | ||
1856835d | 881 | static int unix_listen_saddr(UnixSocketAddress *saddr, |
e5b6353c | 882 | int num, |
1856835d | 883 | Error **errp) |
d247d25f | 884 | { |
8acefc79 | 885 | bool abstract = saddr_is_abstract(saddr); |
d247d25f | 886 | struct sockaddr_un un; |
62b6adfb | 887 | int sock, fd; |
ad9579aa DB |
888 | char *pathbuf = NULL; |
889 | const char *path; | |
2d2023c3 | 890 | size_t pathlen; |
776b97d3 | 891 | size_t addrlen; |
d247d25f | 892 | |
40ff6d7e | 893 | sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0); |
d247d25f | 894 | if (sock < 0) { |
b658c53d | 895 | error_setg_errno(errp, errno, "Failed to create Unix socket"); |
39b6efc8 | 896 | return -1; |
d247d25f AL |
897 | } |
898 | ||
8acefc79 | 899 | if (saddr->path[0] || abstract) { |
ad9579aa | 900 | path = saddr->path; |
d247d25f | 901 | } else { |
b658c53d PB |
902 | const char *tmpdir = getenv("TMPDIR"); |
903 | tmpdir = tmpdir ? tmpdir : "/tmp"; | |
ad9579aa DB |
904 | path = pathbuf = g_strdup_printf("%s/qemu-socket-XXXXXX", tmpdir); |
905 | } | |
b658c53d | 906 | |
2d2023c3 | 907 | pathlen = strlen(path); |
776b97d3 | 908 | if (pathlen > sizeof(un.sun_path) || |
8acefc79 | 909 | (abstract && pathlen > (sizeof(un.sun_path) - 1))) { |
ad9579aa DB |
910 | error_setg(errp, "UNIX socket path '%s' is too long", path); |
911 | error_append_hint(errp, "Path must be less than %zu bytes\n", | |
8acefc79 | 912 | abstract ? sizeof(un.sun_path) - 1 : |
ad9579aa DB |
913 | sizeof(un.sun_path)); |
914 | goto err; | |
915 | } | |
916 | ||
917 | if (pathbuf != NULL) { | |
d247d25f AL |
918 | /* |
919 | * This dummy fd usage silences the mktemp() unsecure warning. | |
920 | * Using mkstemp() doesn't make things more secure here | |
921 | * though. bind() complains about existing files, so we have | |
922 | * to unlink first and thus re-open the race window. The | |
923 | * worst case possible is bind() failing, i.e. a DoS attack. | |
924 | */ | |
ad9579aa | 925 | fd = mkstemp(pathbuf); |
b658c53d PB |
926 | if (fd < 0) { |
927 | error_setg_errno(errp, errno, | |
ad9579aa | 928 | "Failed to make a temporary socket %s", pathbuf); |
b658c53d PB |
929 | goto err; |
930 | } | |
931 | close(fd); | |
d247d25f | 932 | } |
d247d25f | 933 | |
8acefc79 | 934 | if (!abstract && unlink(path) < 0 && errno != ENOENT) { |
0ef705a2 | 935 | error_setg_errno(errp, errno, |
ad9579aa | 936 | "Failed to unlink socket %s", path); |
0ef705a2 CR |
937 | goto err; |
938 | } | |
ad9579aa DB |
939 | |
940 | memset(&un, 0, sizeof(un)); | |
941 | un.sun_family = AF_UNIX; | |
776b97d3 | 942 | addrlen = sizeof(un); |
ad9579aa | 943 | |
8acefc79 | 944 | if (abstract) { |
776b97d3 XZ |
945 | un.sun_path[0] = '\0'; |
946 | memcpy(&un.sun_path[1], path, pathlen); | |
8acefc79 | 947 | if (saddr_is_tight(saddr)) { |
776b97d3 XZ |
948 | addrlen = offsetof(struct sockaddr_un, sun_path) + 1 + pathlen; |
949 | } | |
950 | } else { | |
951 | memcpy(un.sun_path, path, pathlen); | |
952 | } | |
953 | ||
954 | if (bind(sock, (struct sockaddr *) &un, addrlen) < 0) { | |
56382bd5 | 955 | error_setg_errno(errp, errno, "Failed to bind socket to %s", path); |
d247d25f AL |
956 | goto err; |
957 | } | |
e5b6353c | 958 | if (listen(sock, num) < 0) { |
235256a2 | 959 | error_setg_errno(errp, errno, "Failed to listen on socket"); |
d247d25f AL |
960 | goto err; |
961 | } | |
962 | ||
62473511 | 963 | g_free(pathbuf); |
d247d25f AL |
964 | return sock; |
965 | ||
966 | err: | |
ad9579aa | 967 | g_free(pathbuf); |
d247d25f AL |
968 | closesocket(sock); |
969 | return -1; | |
970 | } | |
971 | ||
b2587932 | 972 | static int unix_connect_saddr(UnixSocketAddress *saddr, Error **errp) |
d247d25f | 973 | { |
8acefc79 | 974 | bool abstract = saddr_is_abstract(saddr); |
d247d25f | 975 | struct sockaddr_un un; |
1fc05adf | 976 | int sock, rc; |
2d2023c3 | 977 | size_t pathlen; |
776b97d3 | 978 | size_t addrlen; |
d247d25f | 979 | |
2942e420 | 980 | if (saddr->path == NULL) { |
312fd5f2 | 981 | error_setg(errp, "unix connect: no path specified"); |
2af2bf67 GH |
982 | return -1; |
983 | } | |
984 | ||
40ff6d7e | 985 | sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0); |
d247d25f | 986 | if (sock < 0) { |
235256a2 | 987 | error_setg_errno(errp, errno, "Failed to create socket"); |
39b6efc8 | 988 | return -1; |
d247d25f AL |
989 | } |
990 | ||
2d2023c3 | 991 | pathlen = strlen(saddr->path); |
776b97d3 | 992 | if (pathlen > sizeof(un.sun_path) || |
8acefc79 | 993 | (abstract && pathlen > (sizeof(un.sun_path) - 1))) { |
ad9579aa DB |
994 | error_setg(errp, "UNIX socket path '%s' is too long", saddr->path); |
995 | error_append_hint(errp, "Path must be less than %zu bytes\n", | |
8acefc79 | 996 | abstract ? sizeof(un.sun_path) - 1 : |
ad9579aa DB |
997 | sizeof(un.sun_path)); |
998 | goto err; | |
999 | } | |
1000 | ||
d247d25f AL |
1001 | memset(&un, 0, sizeof(un)); |
1002 | un.sun_family = AF_UNIX; | |
776b97d3 | 1003 | addrlen = sizeof(un); |
1fc05adf | 1004 | |
8acefc79 | 1005 | if (abstract) { |
776b97d3 XZ |
1006 | un.sun_path[0] = '\0'; |
1007 | memcpy(&un.sun_path[1], saddr->path, pathlen); | |
8acefc79 | 1008 | if (saddr_is_tight(saddr)) { |
776b97d3 XZ |
1009 | addrlen = offsetof(struct sockaddr_un, sun_path) + 1 + pathlen; |
1010 | } | |
1011 | } else { | |
1012 | memcpy(un.sun_path, saddr->path, pathlen); | |
1013 | } | |
1fc05adf PB |
1014 | /* connect to peer */ |
1015 | do { | |
1016 | rc = 0; | |
776b97d3 | 1017 | if (connect(sock, (struct sockaddr *) &un, addrlen) < 0) { |
b16a44e1 | 1018 | rc = -errno; |
1fc05adf PB |
1019 | } |
1020 | } while (rc == -EINTR); | |
1021 | ||
1fc05adf | 1022 | if (rc < 0) { |
dfc00eb7 | 1023 | error_setg_errno(errp, -rc, "Failed to connect to '%s'", |
ad9579aa DB |
1024 | saddr->path); |
1025 | goto err; | |
d247d25f AL |
1026 | } |
1027 | ||
d247d25f | 1028 | return sock; |
ad9579aa DB |
1029 | |
1030 | err: | |
1031 | close(sock); | |
ad9579aa | 1032 | return -1; |
d247d25f AL |
1033 | } |
1034 | ||
0c814709 PB |
1035 | #else |
1036 | ||
1856835d | 1037 | static int unix_listen_saddr(UnixSocketAddress *saddr, |
e5b6353c | 1038 | int num, |
1856835d | 1039 | Error **errp) |
0c814709 | 1040 | { |
58899664 | 1041 | error_setg(errp, "unix sockets are not available on windows"); |
0c814709 PB |
1042 | errno = ENOTSUP; |
1043 | return -1; | |
1044 | } | |
1045 | ||
b2587932 | 1046 | static int unix_connect_saddr(UnixSocketAddress *saddr, Error **errp) |
0c814709 | 1047 | { |
58899664 | 1048 | error_setg(errp, "unix sockets are not available on windows"); |
0c814709 PB |
1049 | errno = ENOTSUP; |
1050 | return -1; | |
1051 | } | |
1052 | #endif | |
1053 | ||
2af2bf67 | 1054 | /* compatibility wrapper */ |
62473511 | 1055 | int unix_listen(const char *str, Error **errp) |
62b6adfb | 1056 | { |
1856835d | 1057 | UnixSocketAddress *saddr; |
caf88d74 | 1058 | int sock; |
62b6adfb | 1059 | |
1856835d | 1060 | saddr = g_new0(UnixSocketAddress, 1); |
caf88d74 | 1061 | saddr->path = g_strdup(str); |
e5b6353c | 1062 | sock = unix_listen_saddr(saddr, 1, errp); |
1856835d | 1063 | qapi_free_UnixSocketAddress(saddr); |
62b6adfb GH |
1064 | return sock; |
1065 | } | |
1066 | ||
7fc4e63e | 1067 | int unix_connect(const char *path, Error **errp) |
2af2bf67 | 1068 | { |
2942e420 | 1069 | UnixSocketAddress *saddr; |
2af2bf67 GH |
1070 | int sock; |
1071 | ||
2942e420 DB |
1072 | saddr = g_new0(UnixSocketAddress, 1); |
1073 | saddr->path = g_strdup(path); | |
b2587932 | 1074 | sock = unix_connect_saddr(saddr, errp); |
2942e420 | 1075 | qapi_free_UnixSocketAddress(saddr); |
1fc05adf PB |
1076 | return sock; |
1077 | } | |
1078 | ||
1079 | ||
bd269ebc | 1080 | SocketAddress *socket_parse(const char *str, Error **errp) |
101f9cbc | 1081 | { |
bd269ebc | 1082 | SocketAddress *addr; |
101f9cbc | 1083 | |
bd269ebc | 1084 | addr = g_new0(SocketAddress, 1); |
101f9cbc PB |
1085 | if (strstart(str, "unix:", NULL)) { |
1086 | if (str[5] == '\0') { | |
312fd5f2 | 1087 | error_setg(errp, "invalid Unix socket address"); |
101f9cbc PB |
1088 | goto fail; |
1089 | } else { | |
bd269ebc MA |
1090 | addr->type = SOCKET_ADDRESS_TYPE_UNIX; |
1091 | addr->u.q_unix.path = g_strdup(str + 5); | |
101f9cbc PB |
1092 | } |
1093 | } else if (strstart(str, "fd:", NULL)) { | |
1094 | if (str[3] == '\0') { | |
312fd5f2 | 1095 | error_setg(errp, "invalid file descriptor address"); |
101f9cbc PB |
1096 | goto fail; |
1097 | } else { | |
bd269ebc MA |
1098 | addr->type = SOCKET_ADDRESS_TYPE_FD; |
1099 | addr->u.fd.str = g_strdup(str + 3); | |
101f9cbc | 1100 | } |
6a02c806 | 1101 | } else if (strstart(str, "vsock:", NULL)) { |
bd269ebc MA |
1102 | addr->type = SOCKET_ADDRESS_TYPE_VSOCK; |
1103 | if (vsock_parse(&addr->u.vsock, str + strlen("vsock:"), errp)) { | |
6a02c806 SH |
1104 | goto fail; |
1105 | } | |
101f9cbc | 1106 | } else { |
bd269ebc MA |
1107 | addr->type = SOCKET_ADDRESS_TYPE_INET; |
1108 | if (inet_parse(&addr->u.inet, str, errp)) { | |
101f9cbc PB |
1109 | goto fail; |
1110 | } | |
1111 | } | |
1112 | return addr; | |
1113 | ||
1114 | fail: | |
bd269ebc | 1115 | qapi_free_SocketAddress(addr); |
101f9cbc PB |
1116 | return NULL; |
1117 | } | |
1118 | ||
e5b6353c | 1119 | static int socket_get_fd(const char *fdstr, int num, Error **errp) |
30bdb3c5 | 1120 | { |
947e4744 | 1121 | Monitor *cur_mon = monitor_cur(); |
1723d6b1 | 1122 | int fd; |
e5b6353c JQ |
1123 | if (num != 1) { |
1124 | error_setg_errno(errp, EINVAL, "socket_get_fd: too many connections"); | |
1125 | return -1; | |
1126 | } | |
1723d6b1 DB |
1127 | if (cur_mon) { |
1128 | fd = monitor_get_fd(cur_mon, fdstr, errp); | |
1129 | if (fd < 0) { | |
1130 | return -1; | |
1131 | } | |
1132 | } else { | |
1133 | if (qemu_strtoi(fdstr, NULL, 10, &fd) < 0) { | |
1134 | error_setg_errno(errp, errno, | |
1135 | "Unable to parse FD number %s", | |
1136 | fdstr); | |
1137 | return -1; | |
1138 | } | |
30bdb3c5 DB |
1139 | } |
1140 | if (!fd_is_socket(fd)) { | |
1141 | error_setg(errp, "File descriptor '%s' is not a socket", fdstr); | |
1142 | close(fd); | |
1143 | return -1; | |
1144 | } | |
1145 | return fd; | |
1146 | } | |
1147 | ||
b2587932 | 1148 | int socket_connect(SocketAddress *addr, Error **errp) |
101f9cbc | 1149 | { |
101f9cbc PB |
1150 | int fd; |
1151 | ||
2d32adda | 1152 | switch (addr->type) { |
bd269ebc | 1153 | case SOCKET_ADDRESS_TYPE_INET: |
b2587932 | 1154 | fd = inet_connect_saddr(&addr->u.inet, errp); |
101f9cbc PB |
1155 | break; |
1156 | ||
bd269ebc | 1157 | case SOCKET_ADDRESS_TYPE_UNIX: |
b2587932 | 1158 | fd = unix_connect_saddr(&addr->u.q_unix, errp); |
101f9cbc PB |
1159 | break; |
1160 | ||
bd269ebc | 1161 | case SOCKET_ADDRESS_TYPE_FD: |
e5b6353c | 1162 | fd = socket_get_fd(addr->u.fd.str, 1, errp); |
101f9cbc PB |
1163 | break; |
1164 | ||
bd269ebc | 1165 | case SOCKET_ADDRESS_TYPE_VSOCK: |
b2587932 | 1166 | fd = vsock_connect_saddr(&addr->u.vsock, errp); |
6a02c806 SH |
1167 | break; |
1168 | ||
101f9cbc PB |
1169 | default: |
1170 | abort(); | |
1171 | } | |
101f9cbc PB |
1172 | return fd; |
1173 | } | |
1174 | ||
e5b6353c | 1175 | int socket_listen(SocketAddress *addr, int num, Error **errp) |
101f9cbc | 1176 | { |
101f9cbc PB |
1177 | int fd; |
1178 | ||
e5b6353c | 1179 | trace_socket_listen(num); |
2d32adda | 1180 | switch (addr->type) { |
bd269ebc | 1181 | case SOCKET_ADDRESS_TYPE_INET: |
e5b6353c | 1182 | fd = inet_listen_saddr(&addr->u.inet, 0, num, errp); |
101f9cbc PB |
1183 | break; |
1184 | ||
bd269ebc | 1185 | case SOCKET_ADDRESS_TYPE_UNIX: |
e5b6353c | 1186 | fd = unix_listen_saddr(&addr->u.q_unix, num, errp); |
101f9cbc PB |
1187 | break; |
1188 | ||
bd269ebc | 1189 | case SOCKET_ADDRESS_TYPE_FD: |
e5b6353c | 1190 | fd = socket_get_fd(addr->u.fd.str, num, errp); |
101f9cbc PB |
1191 | break; |
1192 | ||
bd269ebc | 1193 | case SOCKET_ADDRESS_TYPE_VSOCK: |
e5b6353c | 1194 | fd = vsock_listen_saddr(&addr->u.vsock, num, errp); |
6a02c806 SH |
1195 | break; |
1196 | ||
101f9cbc PB |
1197 | default: |
1198 | abort(); | |
1199 | } | |
101f9cbc PB |
1200 | return fd; |
1201 | } | |
1202 | ||
74b6ce43 MAL |
1203 | void socket_listen_cleanup(int fd, Error **errp) |
1204 | { | |
bd269ebc | 1205 | SocketAddress *addr; |
74b6ce43 MAL |
1206 | |
1207 | addr = socket_local_address(fd, errp); | |
2d7ad7c0 DB |
1208 | if (!addr) { |
1209 | return; | |
1210 | } | |
74b6ce43 | 1211 | |
bd269ebc MA |
1212 | if (addr->type == SOCKET_ADDRESS_TYPE_UNIX |
1213 | && addr->u.q_unix.path) { | |
1214 | if (unlink(addr->u.q_unix.path) < 0 && errno != ENOENT) { | |
74b6ce43 MAL |
1215 | error_setg_errno(errp, errno, |
1216 | "Failed to unlink socket %s", | |
bd269ebc | 1217 | addr->u.q_unix.path); |
74b6ce43 MAL |
1218 | } |
1219 | } | |
1220 | ||
bd269ebc | 1221 | qapi_free_SocketAddress(addr); |
74b6ce43 MAL |
1222 | } |
1223 | ||
bd269ebc | 1224 | int socket_dgram(SocketAddress *remote, SocketAddress *local, Error **errp) |
3ecc059d | 1225 | { |
3ecc059d GH |
1226 | int fd; |
1227 | ||
ca0b64e5 | 1228 | /* |
bd269ebc | 1229 | * TODO SOCKET_ADDRESS_TYPE_FD when fd is AF_INET or AF_INET6 |
ca0b64e5 MA |
1230 | * (although other address families can do SOCK_DGRAM, too) |
1231 | */ | |
2d32adda | 1232 | switch (remote->type) { |
bd269ebc MA |
1233 | case SOCKET_ADDRESS_TYPE_INET: |
1234 | fd = inet_dgram_saddr(&remote->u.inet, | |
1235 | local ? &local->u.inet : NULL, errp); | |
3ecc059d GH |
1236 | break; |
1237 | ||
1238 | default: | |
1239 | error_setg(errp, "socket type unsupported for datagram"); | |
7a5b6af1 | 1240 | fd = -1; |
3ecc059d | 1241 | } |
3ecc059d GH |
1242 | return fd; |
1243 | } | |
17c55dec DB |
1244 | |
1245 | ||
bd269ebc | 1246 | static SocketAddress * |
17c55dec DB |
1247 | socket_sockaddr_to_address_inet(struct sockaddr_storage *sa, |
1248 | socklen_t salen, | |
1249 | Error **errp) | |
1250 | { | |
1251 | char host[NI_MAXHOST]; | |
1252 | char serv[NI_MAXSERV]; | |
bd269ebc | 1253 | SocketAddress *addr; |
0399293e | 1254 | InetSocketAddress *inet; |
17c55dec DB |
1255 | int ret; |
1256 | ||
1257 | ret = getnameinfo((struct sockaddr *)sa, salen, | |
1258 | host, sizeof(host), | |
1259 | serv, sizeof(serv), | |
1260 | NI_NUMERICHOST | NI_NUMERICSERV); | |
1261 | if (ret != 0) { | |
1262 | error_setg(errp, "Cannot format numeric socket address: %s", | |
1263 | gai_strerror(ret)); | |
1264 | return NULL; | |
1265 | } | |
1266 | ||
bd269ebc MA |
1267 | addr = g_new0(SocketAddress, 1); |
1268 | addr->type = SOCKET_ADDRESS_TYPE_INET; | |
1269 | inet = &addr->u.inet; | |
0399293e EB |
1270 | inet->host = g_strdup(host); |
1271 | inet->port = g_strdup(serv); | |
17c55dec | 1272 | if (sa->ss_family == AF_INET) { |
0399293e | 1273 | inet->has_ipv4 = inet->ipv4 = true; |
17c55dec | 1274 | } else { |
0399293e | 1275 | inet->has_ipv6 = inet->ipv6 = true; |
17c55dec DB |
1276 | } |
1277 | ||
1278 | return addr; | |
1279 | } | |
1280 | ||
1281 | ||
1282 | #ifndef WIN32 | |
bd269ebc | 1283 | static SocketAddress * |
17c55dec DB |
1284 | socket_sockaddr_to_address_unix(struct sockaddr_storage *sa, |
1285 | socklen_t salen, | |
1286 | Error **errp) | |
1287 | { | |
bd269ebc | 1288 | SocketAddress *addr; |
17c55dec DB |
1289 | struct sockaddr_un *su = (struct sockaddr_un *)sa; |
1290 | ||
bd269ebc MA |
1291 | addr = g_new0(SocketAddress, 1); |
1292 | addr->type = SOCKET_ADDRESS_TYPE_UNIX; | |
3b14b4ec MA |
1293 | #ifdef CONFIG_LINUX |
1294 | if (!su->sun_path[0]) { | |
1295 | /* Linux abstract socket */ | |
1296 | addr->u.q_unix.path = g_strndup(su->sun_path + 1, | |
1297 | sizeof(su->sun_path) - 1); | |
1298 | addr->u.q_unix.has_abstract = true; | |
1299 | addr->u.q_unix.abstract = true; | |
1300 | addr->u.q_unix.has_tight = true; | |
1301 | addr->u.q_unix.tight = salen < sizeof(*su); | |
1302 | return addr; | |
17c55dec | 1303 | } |
3b14b4ec | 1304 | #endif |
17c55dec | 1305 | |
3b14b4ec | 1306 | addr->u.q_unix.path = g_strndup(su->sun_path, sizeof(su->sun_path)); |
17c55dec DB |
1307 | return addr; |
1308 | } | |
1309 | #endif /* WIN32 */ | |
1310 | ||
6a02c806 | 1311 | #ifdef CONFIG_AF_VSOCK |
bd269ebc | 1312 | static SocketAddress * |
6a02c806 SH |
1313 | socket_sockaddr_to_address_vsock(struct sockaddr_storage *sa, |
1314 | socklen_t salen, | |
1315 | Error **errp) | |
1316 | { | |
bd269ebc | 1317 | SocketAddress *addr; |
6a02c806 SH |
1318 | VsockSocketAddress *vaddr; |
1319 | struct sockaddr_vm *svm = (struct sockaddr_vm *)sa; | |
1320 | ||
bd269ebc MA |
1321 | addr = g_new0(SocketAddress, 1); |
1322 | addr->type = SOCKET_ADDRESS_TYPE_VSOCK; | |
1323 | vaddr = &addr->u.vsock; | |
6a02c806 SH |
1324 | vaddr->cid = g_strdup_printf("%u", svm->svm_cid); |
1325 | vaddr->port = g_strdup_printf("%u", svm->svm_port); | |
1326 | ||
1327 | return addr; | |
1328 | } | |
1329 | #endif /* CONFIG_AF_VSOCK */ | |
1330 | ||
bd269ebc | 1331 | SocketAddress * |
17c55dec DB |
1332 | socket_sockaddr_to_address(struct sockaddr_storage *sa, |
1333 | socklen_t salen, | |
1334 | Error **errp) | |
1335 | { | |
1336 | switch (sa->ss_family) { | |
1337 | case AF_INET: | |
1338 | case AF_INET6: | |
1339 | return socket_sockaddr_to_address_inet(sa, salen, errp); | |
1340 | ||
1341 | #ifndef WIN32 | |
1342 | case AF_UNIX: | |
1343 | return socket_sockaddr_to_address_unix(sa, salen, errp); | |
1344 | #endif /* WIN32 */ | |
1345 | ||
6a02c806 SH |
1346 | #ifdef CONFIG_AF_VSOCK |
1347 | case AF_VSOCK: | |
1348 | return socket_sockaddr_to_address_vsock(sa, salen, errp); | |
1349 | #endif | |
1350 | ||
17c55dec DB |
1351 | default: |
1352 | error_setg(errp, "socket family %d unsupported", | |
1353 | sa->ss_family); | |
1354 | return NULL; | |
1355 | } | |
1356 | return 0; | |
1357 | } | |
1358 | ||
1359 | ||
bd269ebc | 1360 | SocketAddress *socket_local_address(int fd, Error **errp) |
17c55dec DB |
1361 | { |
1362 | struct sockaddr_storage ss; | |
1363 | socklen_t sslen = sizeof(ss); | |
1364 | ||
1365 | if (getsockname(fd, (struct sockaddr *)&ss, &sslen) < 0) { | |
b16a44e1 | 1366 | error_setg_errno(errp, errno, "%s", |
17c55dec DB |
1367 | "Unable to query local socket address"); |
1368 | return NULL; | |
1369 | } | |
1370 | ||
1371 | return socket_sockaddr_to_address(&ss, sslen, errp); | |
1372 | } | |
1373 | ||
1374 | ||
bd269ebc | 1375 | SocketAddress *socket_remote_address(int fd, Error **errp) |
17c55dec DB |
1376 | { |
1377 | struct sockaddr_storage ss; | |
1378 | socklen_t sslen = sizeof(ss); | |
1379 | ||
1380 | if (getpeername(fd, (struct sockaddr *)&ss, &sslen) < 0) { | |
b16a44e1 | 1381 | error_setg_errno(errp, errno, "%s", |
17c55dec DB |
1382 | "Unable to query remote socket address"); |
1383 | return NULL; | |
1384 | } | |
1385 | ||
1386 | return socket_sockaddr_to_address(&ss, sslen, errp); | |
1387 | } | |
2a8e21c7 | 1388 | |
216411b8 | 1389 | |
bd269ebc MA |
1390 | SocketAddress *socket_address_flatten(SocketAddressLegacy *addr_legacy) |
1391 | { | |
fc0f0059 | 1392 | SocketAddress *addr; |
bd269ebc MA |
1393 | |
1394 | if (!addr_legacy) { | |
1395 | return NULL; | |
1396 | } | |
1397 | ||
fc0f0059 MA |
1398 | addr = g_new(SocketAddress, 1); |
1399 | ||
bd269ebc MA |
1400 | switch (addr_legacy->type) { |
1401 | case SOCKET_ADDRESS_LEGACY_KIND_INET: | |
1402 | addr->type = SOCKET_ADDRESS_TYPE_INET; | |
1403 | QAPI_CLONE_MEMBERS(InetSocketAddress, &addr->u.inet, | |
1404 | addr_legacy->u.inet.data); | |
1405 | break; | |
1406 | case SOCKET_ADDRESS_LEGACY_KIND_UNIX: | |
1407 | addr->type = SOCKET_ADDRESS_TYPE_UNIX; | |
1408 | QAPI_CLONE_MEMBERS(UnixSocketAddress, &addr->u.q_unix, | |
1409 | addr_legacy->u.q_unix.data); | |
1410 | break; | |
1411 | case SOCKET_ADDRESS_LEGACY_KIND_VSOCK: | |
1412 | addr->type = SOCKET_ADDRESS_TYPE_VSOCK; | |
1413 | QAPI_CLONE_MEMBERS(VsockSocketAddress, &addr->u.vsock, | |
1414 | addr_legacy->u.vsock.data); | |
1415 | break; | |
1416 | case SOCKET_ADDRESS_LEGACY_KIND_FD: | |
1417 | addr->type = SOCKET_ADDRESS_TYPE_FD; | |
1418 | QAPI_CLONE_MEMBERS(String, &addr->u.fd, addr_legacy->u.fd.data); | |
1419 | break; | |
1420 | default: | |
1421 | abort(); | |
1422 | } | |
1423 | ||
1424 | return addr; | |
1425 | } |